Key Stage 1 Maths Spring Term 1 Week 4

Monday 25th January – Friday 29th January 2021

Subtraction

All of the activities have been differentiated and some of the learning objectives are identified as Year 1 (Y1) or Year 2 (Y2) learning. Please choose the most appropriate activities for your child to complete each day. We don’t expect each child to complete

every activity. ☺

Monday

To calculate: Subtracting 1 digit numbers (Y1) To calculate: Subtracting numbers within 100 (Y2) Revisiting calculation methods from the Autumn Term. Practical session. For activities 2 and 3, please cut out the dienes to help your child calculate. Activity 1: Subtracting 1 digit numbers using counters Activity 2: 2 digit - 1 digit using dienes (no exchanging) Activity 3: 2 digit - 2 digit using dienes (no exchanging)

Tuesday

To calculate: Subtracting 1 digit numbers (Y1) To calculate: Subtracting numbers within 100 (Y2) Revisiting calculation methods from the Autumn Term. Activity 1: Subtracting 1 digit numbers drawing counters Activity 2: 2 digit - 1 digit drawing dienes (no exchanging) Activity 3: 2 digit - 2 digit drawing dienes (no exchanging) Activity 4: Next step to deepen learning

Wednesday

To calculate For activities 2 and 3, please reuse the dienes from Monday’s lesson. Activity 1: Subtracting on a number line (Y1) Activity 2: 2 digit - 1 digit (exchanging) Activity 3: 2 digit - 2 digit (exchanging)

Thursday

To calculate Activity 1: Cherry models (Y1) Activity 2: 2 digit - 1 digit drawing dienes (exchanging) Activity 3: 2 digit - 2 digit drawing dienes (exchanging)

Friday

To calculate and solve problems Activity 1: Subtraction word problems (Y1: numbers up to 20) Activity 2: Subtraction word problems (Y2: numbers up to 100)

Monday: Activity 1 Practical session: Subtracting 1 digit numbers using counters or objects Towards the bottom of

this document is a page of counters. These can be cut out and used to help your child calculate if you do not have any objects at home for this activity.

3 - 2 =

5 - 1 =

4 - 4 =

3 - 0 =

6 - 2 =

3 - 1 =

8 - 3 =

7 - 4 =

6 - 3 =

9 - 2 =

7 - 3 =

8 - 5 =

8 - 7 =

4 - 2 =

10 - 5 =

6 - 4 =

9 - 8 =

10 - 7 =

9 - 5 =

10 - 3 =

Monday: Activity 2 Practical session: 2 digit - 1 digit no exchanging.

Towards the bottom of this document is a page of dienes. The dienes can be cut out to

help your child calculate.

19 - 3 =

15 - 4 =

24 - 2 =

29 - 6 =

26 - 5 =

38 - 7 =

56 - 6 =

47 - 2 =

39 - 4 =

46 - 3 =

58 - 4 =

75 - 4 =

68 - 5 =

66 - 3 =

78 - 4 =

85 - 3 =

77 - 6 =

99 - 9 =

96 - 2 =

88 - 6 =

Monday: Activity 3 Practical session: 2 digit - 2 digit no exchanging.

Towards the bottom of this document is a page of dienes. The dienes can be cut out to

help your child calculate.

29 - 13 =

35 - 14 =

24 - 12 =

29 - 16 =

26 - 15 =

38 - 17 =

56 - 26 =

47 - 22 =

39 - 24 =

46 - 33 =

58 - 34 =

75 - 54 =

68 - 35 =

66 - 23 =

78 - 54 =

85 - 63 =

77 - 46 =

99 - 79 =

96 - 52 =

88 - 36 =

Tuesday: Activity 1 Subtracting 1 digit numbers drawing counters

Draw jottings to help you solve these calculations.

4 - 1 =

3 - 3 =

5 - 4 =

2 - 1 =

5 - 2 =

4 - 3 =

6 - 3 =

7 - 4 =

8 - 3 =

9 - 2 =

7 - 2 =

8 - 8 =

8 - 6 =

6 - 2 =

10 - 4 =

8 - 4 =

9 - 6 =

10 - 9 =

9 - 7 =

10 - 2 =

Tuesday: Activity 2 2 digit - 1 digit drawing dienes (no exchanging)

Draw dienes to help you solve these calculations.

15 - 3 =

17 - 4 =

26 - 2 =

28 - 6 =

29 - 5 =

38 - 5 =

59 - 6 =

48 - 3 =

37 - 4 =

48 - 3 =

56 - 4 =

77 - 4 =

66 - 5 =

68 - 3 =

75 - 4 =

84 - 3 =

79 - 6 =

96 - 4 =

97 - 6 =

83 - 2 =

Tuesday: Activity 3 2 digit - 2 digit drawing dienes (no exchanging)

Draw dienes to help you solve these calculations.

25 - 13 =

37 - 14 =

23 - 12 =

27 - 16 =

28 - 15 =

38 - 14 =

57 - 26 =

45 - 22 =

37 - 24 =

48 - 33 =

56 - 34 =

78 - 54 =

67 - 35 =

69 - 23 =

77 - 54 =

88 - 63 =

75 - 42 =

95 - 72 =

96 - 54 =

83 - 31 =

Tuesday: Activity 4 (Next Step) Mark Miss Taylor’s work.

How did I do?

Wednesday: Activity 1 Use the number line to help you solve the following problems.

Start on 10. Count back 5.

- =

Start on 8. Count back 3.

- =

Start on 7. Count back 5.

- =

Start on 10. Count back 3.

- =

Start on 11. Count back 7.

- =

Start on 10. Count back 8.

- =

Start on 15. Count back 5.

- =

Start on 13. Count back 2.

- =

Start on 16. Count back 4.

- =

Start on 19. Count back 6.

- =

Start on 14. Count back 8.

- =

Start on 17. Count back 7.

- =

Start on 12. Count back 10.

- =

Start on 20. Count back 9.

- =

Start on 18. Count back 6.

- =

Wednesday: Activity 2 Practical session: 2 digit - 1 digit with exchanging

Please reuse the dienes from Monday’s session.

Step by step instructions at the

bottom of this document.

15 - 6 =

24 - 6 =

21 - 7 =

13 - 9 =

22 - 6 =

34 - 7 =

51 - 6 =

44 - 8 =

12 - 4 =

21 - 5 =

47 - 9 =

75 - 7 =

63 - 8 =

42 - 8 =

72 - 7 =

61 - 5 =

24 - 8 =

17 - 9 =

82 - 8 =

53 - 9 =

Wednesday: Activity 3 Practical session: 2 digit - 2 digit with exchanging

Please reuse the dienes from Monday’s session.

Step by step instructions at the

bottom of this document.

21 - 12 =

41 - 16 =

42 - 24 =

53 - 29 =

52 - 39 =

37 - 14 =

42 - 27 =

63 - 27 =

58 - 29 =

62 - 18 =

43 - 16 =

71 - 14 =

63 - 16 =

72 - 18 =

95 - 46 =

53 - 25 =

32 - 14 =

51 - 24 =

57 - 19 =

73 - 39 =

Thursday: Activity 1 Roll a dice and write the number in the grey part. Use your subtraction methods to help you find the other part. Example

6 4

10

Thursday: Activity 2 Practical session: 2 digit - 1 digit with exchanging

Draw dienes to help you solve these calculations.

Step by step instructions at the

bottom of this document.

12 - 6 =

21 - 6 =

24 - 7 =

26 - 9 =

23 - 6 =

32 - 7 =

54 - 6 =

46 - 8 =

53 - 4 =

21 - 8 =

44 - 9 =

72 - 7 =

64 - 8 =

45 - 9 =

74 - 7 =

62 - 5 =

45 - 8 =

74 - 9 =

84 - 8 =

58 - 9 =

Thursday: Activity 3 Practical session: 2 digit - 2 digit with exchanging

Draw dienes to help you solve these calculations.

Step by step instructions at the bottom of this document.

21 - 15 =

41 - 13 =

42 - 27 =

53 - 24 =

52 - 27 =

37 - 16 =

42 - 25 =

63 - 28 =

51 - 29 =

62 - 17 =

43 - 17 =

71 - 19 =

63 - 18 =

72 - 14 =

95 - 49 =

53 - 28 =

32 - 19 =

51 - 26 =

55 - 19 =

73 - 27 =

Friday: Activity 1 Word problems I had 10 cookies. I ate 6 cookies. How many cookies do I have left?

Show your working out

Jess had 8 eggs. She broke 4 of them. How many eggs does Jess have left?

Show your working out

There were 13 birds in my garden. 6 birds flew away. How many birds are in my garden now?

Show your working out

Ben had 15 candles. He blew out 8 candles. How many candles remain?

Show your working out

Abdul had 18 balloons. 9 balloons flew away. How many balloons does Abdul have now?

Show your working out

Zara had 20 marbles. She lost 10 of them. How many marbles does Zara have left?

Show your working out

Next step: Write your own subtraction word problems for somebody to solve at home or email them to your teacher.

Friday: Activity 2 Word Problems I had 19 cookies. I ate 6 cookies. How many cookies do I have left?

Show your working out

Jess had 27 eggs. She broke 12 of them. How many eggs does Jess have left?

Show your working out

There were 31 birds in my garden. 8 birds flew away. How many birds are in my garden now?

Show your working out

Ben had 35 candles. He blew out 18 candles. How many candles remain?

Show your working out

Abdul had 48 balloons. 29 balloons flew away. How many balloons does Abdul have now?

Show your working out

Zara had 83 marbles. She lost 43 of them. How many marbles does Zara have left?

Show your working out

Next step: Write your own subtraction word problems for somebody to solve at home or email them to your teacher.

Dienes

Counters

2 digit - 1 digit with exchanging

2 digit - 2 digit with exchanging